Critical Scene from LOTF

 Scene on page 91
.... Ralph leapt to his feet.
"Jack! Jack! You haven't got the conch! Let him speak"
 Jack's face swam near him.
"And you shut up! Who are you anyway? Sitting there telling people what to do. You can't hunt, you can't hunt, you can't sing --"
"I'm chief.  I was chosen"
 "Why should chasing make any difference? Just giving orders that don't make any sense--"
"Piggy's got the conch."
"That's right -- favor Piggy as you always do --"
Jack!"
Jack's voice sounded win the bitter mimicry"
"Jack! Jack!"
"The rules!" shouted Ralph. "You're breaking the rules!"
"Who cares?"
Ralph summoned his wits.
"Because the rules are the only thing we've got"
But Jack was shouting against him.
"Bullocks to the rules! We're strong--we hunt! If there's a beast we'll hunt it down! We'll close in and beat and beat and beat--!"

This scene I think is the most critical scene from LOTF. In this scene Jack is Ralph confronting Ralph's leadership and confronting the "rules" for their existence on the island. Ralph is confronting Jack, trying to reason with him that the rules are all they have that keep them their inner beast. This scene is where we see the difference between civil and savage. It is where we see the difference in the nature of different individuals. Ralph wants to remain a civilized group with rules and Jack wants to go wild and hunt and kill like a savage.

The person verses person conflict in this scene symbolizes the conflict of not just two people's nature but the difference of good and evil within humans. Ralph symbolizes reason, he wants the rules to lead them to being good people who live organized together and who are eventually rescued. Jack wants to go wild and hunt, he doesn't care about reason or organization. Jack wants to eat meat but he also does not want to follow someone else's rules. He is becoming a savage. Ralph recognizes the only difference between being a savage and a civilized person is the rules. This scene starts the real breakdown of the group and that is why it is so important.